Granulated Cork Dust for Insulation
Finely granulated cork dust produced by grinding natural cork bark, used primarily as a lightweight thermal insulation filler in building materials and packaging. Classified under HTS 4501.90.40.00 as granulated cork, distinct from raw cork or waste, specifically prepared through crushing and grinding processes.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | +35.0% | 35% |
| 🇲🇽Mexico | Free | +10.0% | 10% |
| 🇨🇦Canada | Free | +10.0% | 10% |
| 🇩🇪Germany | Free | +10.0% | 10% |
| 🇯🇵Japan | Free | +10.0% | 10% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If in larger chunks or irregular pieces
Coarser crushed cork without fine granulation falls under waste cork provisions.
If compressed into blocks or sheets
Agglomerated cork products from granulated cork shift to Chapter 45 heading 4504.
If mixed with binders for panels
Processed into composite panels, it becomes articles of stone or similar materials.
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Import Tips & Compliance
• Verify particle size and purity through lab testing to confirm classification as granulated cork rather than waste
• Provide certificates of origin for natural cork sourcing to avoid misclassification as synthetic materials
• Ensure bulk packaging complies with phytosanitary requirements for natural bark products
Related Products under HTS 4501.90.40.00
Ground Cork Powder for Gaskets
Ultra-fine ground cork powder derived from crushed cork, serving as a compressible filler in manufacturing industrial gaskets and seals. HTS 4501.90.40.00 applies to this ground form of natural cork, prepared solely by mechanical processing without binders.
Crushed Cork Granules for Flooring Underlay
Medium-sized crushed and granulated cork particles used as an acoustic and thermal underlay beneath laminate flooring. This product is classified under HTS 4501.90.40.00 for its form as crushed, granulated, or ground natural cork, prior to any agglomeration.
Granulated Cork for Wine Bottle Stoppers
Granulated cork obtained by grinding select quality cork bark, used as raw material for technical wine stopper production through agglomeration. HTS 4501.90.40.00 specifically covers this granulated form before further processing into shaped stoppers.
Ground Cork Filler for Shoe Soles
Finely ground cork used as a lightweight filler material in EVA or rubber shoe sole compounds, providing cushioning properties. This bulk ground cork is classified under HTS 4501.90.40.00 as simply prepared granulated or ground cork.
Crushed Cork for Industrial Absorbents
Coarsely crushed and granulated cork used in spill cleanup kits for absorbing oils and chemicals in industrial settings. HTS 4501.90.40.00 covers this processed form of natural cork prepared by crushing and granulation.
Granulated Cork for Craft Supplies
Small-particle granulated cork sold in bulk for arts, crafts, and model-making applications like scenery filler and texture material. This product falls under HTS 4501.90.40.00 as crushed or granulated natural cork.